Basement Flat, 11 Grosvenor Place, Bath, BA1 6AX
About Basement Flat
Basement Flat is a mid-terrace house in Bath (BA1 6AX). It has a recorded floor area of 53 m² (around 570 sq ft) and construction records dating it to before 1900. The latest certificate (June 2024) shows a D (score 63), on the cusp of jumping into the C band. Earlier certificates rated it C (November 2008); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Very Good to Very Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity.
It hasn't traded since September 2004, a hold of 22 years that's notably long for the area. Across the public record there are 4 sales, relatively high churn for a single property. Across 1998–2004, sale prices on this property compounded at 18.2% per year. Today's modelled estimate of £236,000 is 42.2% above the 2004 sale price. On a £-per-square-foot basis, the last sale (£291/sq ft) was about 17.9% above the typical sold price in the postcode. At 53 m² it's 27.4% smaller than the typical home in the postcode (73 m² median across 113 EPCs). One historical planning record sits against the property in 2023.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 25 June 2034
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water system changed
Wall insulation improved
More low energy lighting installed
Ventilation system changed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
1 application on record at Basement Flat, 11 Grosvenor Place, Bath, BA1 6AX
- Jul 2023RenovationHeritageOutcome in report
Internal and external alterations for the Installation of a positive input ventilation unit and extract fan to remedy damp issues within the lower ground floor apartment.
- Documents
- 11 docs on file
- Reference
- 23/01529/LBA
Unlock Basement Flat, 11 Grosvenor Place, Bath, BA1 6AX's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 15 notable nearby
- The 11 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has at least doubled since 1998.
£236,000
Modelled from EPC, postcode comparables and a sale-price growth of 18.2% per year over 6 years.
£166,000
Growth on file: 18.2% per year over 6 years.
Sales timeline
16 September 2004Most recent
£166,000
+13.7%over 12 months30 September 2003
£146,000
+0.7%over 7 months13 March 2003
£145,000
+141.9%over 4 years13 August 1998
£59,950
Median price across the last 5 sales in BA1 6AX: £285,000 (2026–2025).
Nearby sales in BA1 6AX
Third Floor Flat, 6 Grosvenor Place, Bath, BA1 6AX
Sold Jun 2026
£355,000Flat 6, 2 Grosvenor Place, Bath, BA1 6AX
Sold Jun 2026
£162,500Basement Flat, 12 Grosvenor Place, Bath, BA1 6AX
Sold Jun 2025
£285,000First Floor Flat, 15 Grosvenor Place, Bath, BA1 6AX
Sold Jun 2025
£332,00020 Grosvenor Place, Bath, BA1 6AX
Sold May 2025
£200,000
Versus other Grosvenor Place homes
Years Held for Basement Flat runs comfortably ahead of the street norm.
Price per m²
£3,132
Street avg £3,992
Floor Area
53 m²
Street avg 75 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.3 t/year
Street avg 3.3 t/year
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The neighbourhood at a glance
Crime
392/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Balustrade — bus stop.
Closest school
0.5 km
St Saviours Junior Church School. 15 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







